S
M
T
W
T
F
S
29
37°
11°
30
32°
10°
1
26°
21°
2
32°
11°
3
33°
9°
4
26°
21°
5
34°
23°
6
38°
24°
7
37°
22°
8
39°
19°
9
31°
13°
10
40°
21°
11
41°
20°
12
Hist. Avg.
28°
9°
13
Hist. Avg.
27°
9°
14
Hist. Avg.
27°
9°
15
Hist. Avg.
27°
8°
16
Hist. Avg.
27°
8°
17
Hist. Avg.
26°
8°
18
Hist. Avg.
26°
7°
19
Hist. Avg.
26°
7°
20
Hist. Avg.
26°
7°
21
Hist. Avg.
26°
7°
22
Hist. Avg.
25°
6°
23
Hist. Avg.
25°
6°
24
Hist. Avg.
25°
6°
25
Hist. Avg.
25°
6°
26
Hist. Avg.
25°
6°
27
Hist. Avg.
25°
5°
28
Hist. Avg.
25°
5°
29
Hist. Avg.
25°
5°
30
Hist. Avg.
25°
5°
31
Hist. Avg.
24°
5°
1
Hist. Avg.
24°
5°
2
Hist. Avg.
24°
4°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Madison
Madison's December 2026 forecast shows daily high temperatures ranging from 26° to 41°, with overnight lows between 9° and 24°. The average high for December is 34° with an average low of 17°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Madison. See also: January | February | March.